Automobile-tire.



E. N. BREITUNG.

AUTOMOBILE TIRE.

APPLICATION FILED JAN. 27, 1913. v 1,081,010. Patented 1130.111913.

stares nageur ernten.

nnwanafuronaiae neutrons, or Mancaversa, manteau.

To all whom t may concern.'

Be it known that l, EDWARD Nrcnnas, Briantino, a citizen .oi the United States, and a resident of Marquette city, in the county of Marquette and State ,of Michigan, have invented certain new and useful lmprovements in Automobile-Tires, .of which the following is a specification, reference being had to the accompanying drawings, forming a part thereof.-

My invention relates to tires for vehicle wheels and has for its object to provide a simple and durable tire of the pneumatic or intlated ltype which shall be specially adapted for use with the wheels of automobiles and which shall comprise two or more tire tubes arranged to be intiated one at a time.

Other objects of my invention will herein after be set forth.

l will describe my invent'on in the following specification and point out Ithe novel features thereof in appended claims.

Referring to .the drawings,-Figure 1 iS an elevation of a wheel equipped with a tire which embodies my invention, a section of the tire being broken away lto show the shoe and the tire tubes in section. Fig. Q is a transverse sectional elevation 4on a larger scale, of a portion ,of the wheel rima-nd tire shown in Fig. 1. Fig. 3 is a longitudinal section, on a still larger scale, of a' pump or air bottle connect-or and Fig. 4 is a longitudinal section of a tire valve adapted for use with a plurality of tire ttubes such as are shown in Figs. 1 and 2 andarranged for attachment to the connector of Fig. 3.

lVhile my tire tube arrangement is of special advantage. when used with a sectional shoe and is illustrated irlthis connection. my invention is not limited in this regard and may be used with an ordinary continuous shoe.

10 is a vehicle wheel such for example as is used on an automobile and has a telly 11 and spokes 12. A rim 13 iS secured to the telly as usual.

15 is a tire and comprises a shoe 16 which may be either continuous or made in sections as shown in Fig. 1, and two or more elastic tire tubes 17 and 18 one within the other and a plural valve mechanism 20.

The valve mechanism may be constructed in any suitable manner within the spirit and scope of my invention.

One form is shown in Fig. 4 and comprises a relatively small tube 31, having a Specification or' Letters Patent.

- spring Patented Dee. 9, 1913.

application fue@ January-.27, 1913. Aseran No. mesas.

tlange ,or head 32 and being vinternally and externally screw threaded near its end, an a larger tube havinga tia-nge 4or head 36. The tube 31 of the valve mechanism extends through a hole .in the tire tube 17 and is secured to the tire tube by a nut 37 which squeezes the rubber of the tube against the under side of the head 32 as shown in Fig. G and lforms an air tight joint. The tube 35 is large enough to tit loosely i over the'tube 31 and `extends through a hole in the tire tube 18 .to which it is joined by a nut 88,

A hollow plug 40 is screwed into the end of the tube 31 and is arranged to :torna a seat for a valve 41. This valve is mounted on a rod 42 having a collar 43 against which acts a spring 44. A notched thimble 45 is slidably mounted on .the rod 4Q near its lower end which is enlargedl to hold the thimble in position. The spring 44 surrounds the rod 42 the thimble and, the collar- 48, the notched end of the thimble being in engagement with 'an annular shoulder46 on the inside of the .tube 31 so that the valve 41 is pressed against its seat by the spring.' The upper end of the rod extends through and beyond the hollow plug 40 to the end of the tube 31 which is provided with a screw c-ap 47.

The outer tube has'an inwardly extending annular projection and an inwardlyextending end flange 51. A collar 49 is screwed onto the smaller tube 31 and 'tits loosely within the flange 51. an annular port 52 being thereby provided for the outer tire tube 18.

An annular valve 53 is adapted to close the port and is pressed onto .its seat by a y54 which is interposed4 between a tiange 5,5 of a sleeve 56 and a notched thimble 57 at the lower end thereof'. The thimble is arranged to slide ,on the sleeve and presses against the annular projection 50.

A cap 58 is screwed onto the end of the tube 35 and covers the entire valve mechanism. Y

Tne relative longitudinal positions ot' the tubes 31 and 35 may -be fixed by any suitable lmeans such as` a plurality of set screws 70,

only one of which is shown.

`The tire tubes are as a single tube is applied, the shoe or shoe sections being secured to the -rim in the usual manner.

When the shoe is-in place the outer cap 58 and is interposed between 'applied to a wheel is removed and is replaced by the connector of an air pump or air bottle. .The pressure of the air applied pushes down the Valve 53 in opposition to the spring 54 and inlates the outer tire tube 18. The inner tube 17 remains collapsed and occupies a small space Within the outer tube 18 and out of contact With its Walls. In fact the pressure in the outer tube 18 tends to com.

pletely flatten the tube 17 although for convenience in illustrating the arrangement it is shown partially expanded in the drawings.

If the tube '18 should become p-unctured in operation it is only necessary to repair the shoe as far as the nature of the accident may require and to iniiate the tube 1'1" The tire is now in as good running condition as at first. and in fact the tube 17 is more protected than the tube 18 since the one is covered by the other. Obviously the time required to`repair a puncture is uery small under these conditions. The inner .tube 17 is inflated by removing both of the caps 58 and 47 and screwing a suitable pump or air bottle connector onto the tube 31. In order that a single pump discharge pipe or tube maybe lused for iniiating either of the tire tubes the connector shown in Fig. 3 may be used. This comprises a tubular .member 60 having a corrugated end section 61 to which 'a flexible tube 62 is attachedV by a clamping ring 63, and annular projections or collars 64, 65 and 66. On the'tubu. lar member is mounted a coupling 67 which is adapted to be screwed onto the end of the outer valve tube 35 and a coupling 68 which is` adapted to be screwed onto the vimier valve tube 31. The couplings 67 and 68 are arranged to slide on the tubular member between the collars 64 and65, and the. collars 65 and 66 respectively. If a sec-- tional shoe is used, even a bad break in the tire can be very' quick-ly repaired by replacin the broken section only and in fiating t 1ey remaining tire tube. It is there,

cured to the tire tubes and forming indeperdent inlet passages therefor, a hollowr `valve seat Within the inner tubular member, a spring-pressed valve adapted to close the opening in the inner tubular member. cooperating annular projections on the outside of the inner tubular member and the inside of the outerl tubular member constitut-ing an annularl valve seat; and a springpressed annular valve adapted to close the opening in the outer member.

2. A vehicle tire comprising a slice. tire -tubeslocated one Within the other, and a valve mechanism having a single inlet and comprising a pair of substantially concentric tubular members secured to the respective tire tubes and forming independent inlet passages therefor, a bushing within the inner tubular member constituting a valve seat, a spring-pressed plug valve adapted to close the opening in the inner tubular men1- ber, a collar on the outside of the inner tubu- 'lar member. and an annular project-ion on the inside of the outer tubular member cooperating. with the collar to lconstitute an annular valve seat; and av spring-pressed annular valve adapted to close the opening in the outer tubular 1nember whereby the tire tubes may be independently inflated.

In Witness whereof, I have hereunto set my hand this 25th day of January in the year 1913.

- EDWARD NlcKLAs BREITUNG.

Witnesses:

W. P. HAMILTON, MAX BREITUNG.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents.

`\\ Washington. D. C. i 

